Tryptophan, the end-product of the enzymes encoded by the trp operon, therefore acts as a co-repressor and inhibits its own synthesis through:

TLS Online TPP Program

#Question id: 12036

#7. System Physiology – Animal

A fasting animal whose energy needs exceed those provided in its diet will draw on its stored resources in which order?

TLS Online TPP Program

#Question id: 12037

#7. System Physiology – Animal

Feelings of hunger can be stimulated by the hormone ________, but suppressed by the hormone ________.

TLS Online TPP Program

#Question id: 12043

#7. System Physiology – Animal

Digestion of which of the following foodstuffs is impaired to the greatest extent in patients with achlorhydria?

TLS Online TPP Program

#Question id: 12070

#7. System Physiology – Animal

A 26-year-old man develops glomerulonephritis, and his GFR decreases by 50% and remains at that level. For which of the following substances would you expect to find the greatest increase in plasma concentration?

TLS Online TPP Program

#Question id: 12071

#7. System Physiology – Animal

The most serious hypokalemia would occur in which of the following conditions?

TLS Online TPP Program

#Question id: 12072

#7. System Physiology – Animal

If the average hydrostatic pressure in the glomerular capillaries is 50 mm Hg, the hydrostatic pressure in the Bowman’s space is 12 mm Hg, the average colloid osmotic pressure in the glomerular capillaries is 30 mm Hg, and there is no protein in the glomerular ultrafiltrate, what is the net pressure driving glomerular filtration?